CVE-2026-54277
Fixed in a distro release EPSS <1%CVSS 6.6
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, it is possible to bypass the max_line_size check in parts of an HTTP request in the C parser. If using the optimised C parser (the default in pre-built wheels), then an attacker may be able to send oversized lines through the HTTP parser and use an excessive amount of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.
Products: aio-libs aiohttp
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| PyPI | aiohttp | 3.14.1 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | airflow-2 | no fix |
| Chainguard | airflow-3 | 3.3.1-r0 |
| Chainguard | airflow-3 | 3.2.2-r7 |
| Chainguard | airflow-core-2 | 2.11.2-r6 |
| Chainguard | apache-beam-python-3.11-sdk | 2.74.0-r3 |
| Chainguard | apache-beam-python-3.12-sdk | 2.74.0-r1 |
| Chainguard | apache-beam-python-3.13-sdk | 2.74.0-r1 |
| Chainguard | authentik-2025.12 | 2025.12.6-r3 |
| Chainguard | authentik-2026.2 | 2026.2.4-r4 |
| Chainguard | authentik-fips-2025.12 | 2025.12.6-r2 |
| Chainguard | authentik-fips-2026.2 | 2026.2.4-r3 |
| Chainguard | awx | 24.6.1-r42 |
| Chainguard | dask-kubernetes-fips | 2026.3.0-r4 |
| Chainguard | lmcache-cuda-12.8 | 0.5.3-r0 |
| Chainguard | metaflow-service-fips | 2.5.0-r5 |
| Chainguard | mlflow | 3.13.0-r1 |
| Chainguard | mlflow | 3.16.0-r0 |
| Chainguard | mlflow-fips | 3.13.0-r1 |
| Chainguard | open-webui | 0.9.6-r5 |
| Chainguard | py3.10-vllm-cuda-12.4 | 0.18.1-r3 |
| Chainguard | py3.10-vllm-cuda-12.9 | 0.19.1-r0 |
| Chainguard | py3.10-vllm-cuda-13.0 | 0.20.2-r1 |
| Chainguard | py3.12-vllm-cuda-12.4 | 0.18.1-r3 |
| Chainguard | py3.12-vllm-cuda-12.9 | 0.19.1-r0 |
| Chainguard | py3.12-vllm-cuda-13.0 | 0.20.2-r1 |
| Chainguard | py3.13-scanner-test-libraries-aiohttp | 0.0.1-r3 |
| Chainguard | py3.13-vllm-cuda-12.9 | 0.19.1-r0 |
| Chainguard | py3.13-vllm-cuda-13.0 | 0.20.2-r1 |
| Chainguard | request-1276 | 0.29.0-r1 |
| Chainguard | text-generation-inference | 3.3.7-r16 |
| Chainguard | tritonserver-backend-vllm-cuda-12.9 | 25.9.0_git20260617-r2 |
| Chainguard | tritonserver-backend-vllm-cuda-12.9 | 25.9.0_git20260617-r0 |
| Chainguard | tritonserver-backend-vllm-cuda-13.0 | 25.11-r9 |
| Debian 12 | python-aiohttp | no fix |
| Debian 13 | python-aiohttp | no fix |
| Debian 14 | python-aiohttp | 3.14.1-1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-aiohttp | 3.6.0-150100.3.38.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP5 | python-aiohttp | 3.6.0-150100.3.38.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP6 | python-aiohttp | 3.6.0-150100.3.38.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP7 | python-aiohttp | 3.6.0-150100.3.38.1 |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server 16.0 | python-aiohttp | 3.11.16-160000.6.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-aiohttp | 3.11.16-160000.6.1 |
| Ubuntu 25.10 | python-aiohttp | no fix |
| Ubuntu 26.10 | python-aiohttp | no fix |
| Ubuntu Pro 16.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 18.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 20.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 22.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 24.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 26.04 LTS | python-aiohttp | no fix |
| Wolfi | airflow-3 | 3.2.2-r7 |
| Wolfi | airflow-3 | 3.3.1-r0 |
| Wolfi | mlflow | 3.16.0-r0 |
| Wolfi | mlflow | 3.13.0-r1 |
| Wolfi | open-webui | 0.9.6-r5 |
| openSUSE Leap 16.0 | python-aiohttp | 3.11.16-160000.6.1 |
| openSUSE Tumbleweed | python-aiohttp | 3.14.1-1.1 |